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Vulnerability record · CVE-2016-0049 · published 10 February 2016

CVE-2016-0049: Microsoft windows 10 vulnerability

Microsoft · Windows 10

Kerberos in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, and Windows 10 Gold and 1511 does not properly validate password changes, which allows remote attackers to bypass authentication by deploying a crafted Key Distribution Center (KDC) and then performing a sign-in action, aka "Windows Kerberos Security Feature Bypass."

6.2 CVSS 3.0 Medium EPSS 13% · top 3.8% CWE-255 · CWE-255
6.2CVSS 3.0 base score, v2 2.1
13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

Kerberos in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, and Windows 10 Gold and 1511 does not properly validate password changes, which allows remote attackers to bypass authentication by deploying a crafted Key Distribution Center (KDC) and then performing a sign-in action, aka "Windows Kerberos Security Feature Bypass."

CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

6 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/135797/Windows-Kerberos-Security-Feature-Bypass.html
http://www.securityfocus.com/bid/82535
http://www.securitytracker.com/id/1034985
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-014
https://www.exploit-db.com/exploits/39442/
http://packetstormsecurity.com/files/135797/Windows-Kerberos-Security-Feature-Bypass.html
http://www.securityfocus.com/bid/82535
http://www.securitytracker.com/id/1034985
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-014
https://www.exploit-db.com/exploits/39442/

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-0049), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.